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B4003810 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

B4003810: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN NO. 2, head_height: 0.051 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.180 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN, thread_length: 0.458 INCHES NOMINAL IN, fastener_length: 0.500 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-202-8963, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
B4003810
NSN: 5305-01-202-8963
FSC: 5305 — Screws
CAGE: 56996 — DEPARTMENT OF THE ARMY HQ UNITED STATES ARMY COMMUNICATIONS RESEARCH AND DEVELOPMENT COMMAND (USA)
SPECIFICATIONS
head_stylePAN NO. 2
head_height0.051 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.180 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
thread_length0.458 INCHES NOMINAL IN
fastener_length0.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.099 INCHES IN
screw_surface_treatmentCADMIUM AND CHROMATE
thread_quantity_per_inch48
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-202-8963
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B4003810 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD HEIGHT: 0.051 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE
•
FASTENER LENGTH: 0.500 INCHES NOMINAL IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A108 ASSN STD ALL MATERIAL RESPONSES
•
THREAD LENGTH: 0.458 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.099 INCHES IN
•
HEAD STYLE: PAN NO. 2
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.051 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM AND CHROMATE
FASTENER LENGTH0.500 INCHES NOMINAL IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONASTM A108 ASSN STD ALL MATERIAL RESPONSES
THREAD LENGTH0.458 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.099 INCHES IN
HEAD STYLEPAN NO. 2
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OR STEEL COMP 1040 OR STEEL COMP 1045 OR STEEL COMP 1050 OR STEEL COMP 1095 OR STEEL COMP 1117 OR STEEL COMP 1118 OR STEEL COMP 1137 OR STEEL COMP 1141 OR STEEL COMP 1144 OR STEEL COMP 1151 OR STEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1215
INTERNAL DRIVE STYLESLOT
SUBSTITUTES & CROSS-REFERENCES 4
4016Reference document
Same NSN cross-reference
Reference document — Secondary reference
4016-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
4016ADXReference document
Same NSN cross-reference
Reference document — Secondary reference
B4003810-1Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B4003810?
B4003810 is a SCREW,MACHINE.
What parts can replace B4003810?
There are 4 known substitutes for B4003810: 4016, 4016-1, 4016ADX and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B4003810?
B4003810 is cataloged in the U.S. Government catalog under NSN 5305-01-202-8963. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.